Uncategorized

  1. Astronomy

    One of Hubble’s Tools Fails: Observatory loses a sharp ultraviolet eye

    With the failure last week of an instrument on the Hubble Space Telescope, astronomers have lost their only sharp ultraviolet eye on the universe.

    By Ron Cowen
  2. Earth

    Protecting Baby: Calcium in pregnancy reduces lead exposure

    By taking calcium supplements during pregnancy, a mother can significantly reduce the lead exposure of her fetus.

    By Carrie Lock

  3. Glowing Trio under the Sea: Nitrogen fixer joins algae inside coral

    A coral that fluoresces orange appears to be the first ever found to contain a symbiotic microbe that converts nitrogen into a biologically useful form.

    By Susan Milius

  4. 19453

    I wonder if the growth rings appearing in dinosaur bones are analogous to those of trees, which are determined by the annual climatic cycle.